Home / 385,013.34-531,341.64-215,248.68

Finding the Fourth Proportional to 385,013.34, 531,341.64 and 215,248.68

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Solution

The fourth proportional to 385,013.34, 531,341.64 and 215,248.68 is: 297,056.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,013.34 : 531,341.64 = 215,248.68 : x
  2. Step 2: Convert to fraction form
    385,013.34/531,341.64 = 215,248.68/x
  3. Step 3: Cross multiply
    385,013.34x = 531,341.64 × 215,248.68
  4. Step 4: Simplify right side
    385,013.34x = 114,370,586,639.04
  5. Step 5: Solve for x
    x = 114,370,586,639.04/385,013.34
  6. Step 6: Final answer
    x = 297,056.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.